Pith Number

pith:QJVB5IXL

pith:2012:QJVB5IXLN435QUFX3EBHH7XFMT

not attested not anchored not stored refs pending

A Note on the SPICE Method

Cristian R. Rojas, Dimitrios Katselis, H{\aa}kan Hjalmarsson

arxiv:1209.4887 v1 · 2012-09-21 · stat.ML · cs.SY

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QJVB5IXLN435QUFX3EBHH7XFMT}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:54:20.031238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

826a1ea2eb6f37d850b7d90273fee564d78e88d93b8516250745de1e042bce98

Aliases

arxiv: 1209.4887 · arxiv_version: 1209.4887v1 · doi: 10.48550/arxiv.1209.4887 · pith_short_12: QJVB5IXLN435 · pith_short_16: QJVB5IXLN435QUFX · pith_short_8: QJVB5IXL

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QJVB5IXLN435QUFX3EBHH7XFMT \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 826a1ea2eb6f37d850b7d90273fee564d78e88d93b8516250745de1e042bce98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "544355c283d7ffd32f16e5a683be78e85139d11ba96b4950b279c21c5c293d9e",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2012-09-21T19:15:16Z",
    "title_canon_sha256": "d93e09d30a3aeb1c3e83653f6f251457035a7fe238f21ff986af3bdcaea8cb88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4887",
    "kind": "arxiv",
    "version": 1
  }
}